upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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333 lines
8.1 KiB
333 lines
8.1 KiB
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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*/
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#include <common.h>
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#include <dm.h>
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#include <errno.h>
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#include <malloc.h>
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#include <usb.h>
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#include <dm/device-internal.h>
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#include "usb_ether.h"
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#ifdef CONFIG_DM_ETH
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#define USB_BULK_RECV_TIMEOUT 500
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int usb_ether_register(struct udevice *dev, struct ueth_data *ueth, int rxsize)
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{
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struct usb_device *udev = dev_get_parent_priv(dev);
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struct usb_interface_descriptor *iface_desc;
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bool ep_in_found = false, ep_out_found = false;
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struct usb_interface *iface;
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const int ifnum = 0; /* Always use interface 0 */
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int ret, i;
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iface = &udev->config.if_desc[ifnum];
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iface_desc = &udev->config.if_desc[ifnum].desc;
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/* Initialize the ueth_data structure with some useful info */
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ueth->ifnum = ifnum;
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ueth->subclass = iface_desc->bInterfaceSubClass;
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ueth->protocol = iface_desc->bInterfaceProtocol;
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/*
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* We are expecting a minimum of 3 endpoints - in, out (bulk), and int.
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* We will ignore any others.
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*/
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for (i = 0; i < iface_desc->bNumEndpoints; i++) {
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int ep_addr = iface->ep_desc[i].bEndpointAddress;
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/* is it an BULK endpoint? */
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if ((iface->ep_desc[i].bmAttributes &
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USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK) {
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if (ep_addr & USB_DIR_IN && !ep_in_found) {
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ueth->ep_in = ep_addr &
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USB_ENDPOINT_NUMBER_MASK;
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ep_in_found = true;
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} else if (!(ep_addr & USB_DIR_IN) && !ep_out_found) {
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ueth->ep_out = ep_addr &
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USB_ENDPOINT_NUMBER_MASK;
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ep_out_found = true;
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}
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}
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/* is it an interrupt endpoint? */
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if ((iface->ep_desc[i].bmAttributes &
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USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
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ueth->ep_int = iface->ep_desc[i].bEndpointAddress &
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USB_ENDPOINT_NUMBER_MASK;
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ueth->irqinterval = iface->ep_desc[i].bInterval;
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}
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}
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debug("Endpoints In %d Out %d Int %d\n", ueth->ep_in, ueth->ep_out,
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ueth->ep_int);
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/* Do some basic sanity checks, and bail if we find a problem */
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if (!ueth->ep_in || !ueth->ep_out || !ueth->ep_int) {
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debug("%s: %s: Cannot find endpoints\n", __func__, dev->name);
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return -ENXIO;
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}
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ueth->rxsize = rxsize;
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ueth->rxbuf = memalign(ARCH_DMA_MINALIGN, rxsize);
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if (!ueth->rxbuf)
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return -ENOMEM;
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ret = usb_set_interface(udev, iface_desc->bInterfaceNumber, ifnum);
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if (ret) {
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debug("%s: %s: Cannot set interface: %d\n", __func__, dev->name,
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ret);
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return ret;
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}
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ueth->pusb_dev = udev;
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return 0;
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}
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int usb_ether_deregister(struct ueth_data *ueth)
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{
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return 0;
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}
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int usb_ether_receive(struct ueth_data *ueth, int rxsize)
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{
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int actual_len;
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int ret;
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if (rxsize > ueth->rxsize)
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return -EINVAL;
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ret = usb_bulk_msg(ueth->pusb_dev,
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usb_rcvbulkpipe(ueth->pusb_dev, ueth->ep_in),
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ueth->rxbuf, rxsize, &actual_len,
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USB_BULK_RECV_TIMEOUT);
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debug("Rx: len = %u, actual = %u, err = %d\n", rxsize, actual_len, ret);
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if (ret) {
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printf("Rx: failed to receive: %d\n", ret);
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return ret;
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}
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if (actual_len > rxsize) {
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debug("Rx: received too many bytes %d\n", actual_len);
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return -ENOSPC;
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}
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ueth->rxlen = actual_len;
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ueth->rxptr = 0;
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return actual_len ? 0 : -EAGAIN;
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}
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void usb_ether_advance_rxbuf(struct ueth_data *ueth, int num_bytes)
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{
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ueth->rxptr += num_bytes;
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if (num_bytes < 0 || ueth->rxptr >= ueth->rxlen)
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ueth->rxlen = 0;
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}
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int usb_ether_get_rx_bytes(struct ueth_data *ueth, uint8_t **ptrp)
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{
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if (!ueth->rxlen)
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return 0;
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*ptrp = &ueth->rxbuf[ueth->rxptr];
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return ueth->rxlen - ueth->rxptr;
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}
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#else
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typedef void (*usb_eth_before_probe)(void);
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typedef int (*usb_eth_probe)(struct usb_device *dev, unsigned int ifnum,
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struct ueth_data *ss);
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typedef int (*usb_eth_get_info)(struct usb_device *dev, struct ueth_data *ss,
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struct eth_device *dev_desc);
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struct usb_eth_prob_dev {
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usb_eth_before_probe before_probe; /* optional */
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usb_eth_probe probe;
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usb_eth_get_info get_info;
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};
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/* driver functions go here, each bracketed by #ifdef CONFIG_USB_ETHER_xxx */
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static const struct usb_eth_prob_dev prob_dev[] = {
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#ifdef CONFIG_USB_ETHER_ASIX
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{
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.before_probe = asix_eth_before_probe,
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.probe = asix_eth_probe,
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.get_info = asix_eth_get_info,
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},
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#endif
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#ifdef CONFIG_USB_ETHER_ASIX88179
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{
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.before_probe = ax88179_eth_before_probe,
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.probe = ax88179_eth_probe,
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.get_info = ax88179_eth_get_info,
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},
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#endif
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#ifdef CONFIG_USB_ETHER_MCS7830
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{
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.before_probe = mcs7830_eth_before_probe,
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.probe = mcs7830_eth_probe,
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.get_info = mcs7830_eth_get_info,
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},
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#endif
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#ifdef CONFIG_USB_ETHER_SMSC95XX
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{
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.before_probe = smsc95xx_eth_before_probe,
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.probe = smsc95xx_eth_probe,
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.get_info = smsc95xx_eth_get_info,
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},
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#endif
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#ifdef CONFIG_USB_ETHER_RTL8152
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{
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.before_probe = r8152_eth_before_probe,
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.probe = r8152_eth_probe,
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.get_info = r8152_eth_get_info,
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},
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#endif
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{ }, /* END */
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};
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static int usb_max_eth_dev; /* number of highest available usb eth device */
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static struct ueth_data usb_eth[USB_MAX_ETH_DEV];
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/*******************************************************************************
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* tell if current ethernet device is a usb dongle
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*/
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int is_eth_dev_on_usb_host(void)
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{
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int i;
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struct eth_device *dev = eth_get_dev();
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if (dev) {
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for (i = 0; i < usb_max_eth_dev; i++)
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if (&usb_eth[i].eth_dev == dev)
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return 1;
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}
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return 0;
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}
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/*
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* Given a USB device, ask each driver if it can support it, and attach it
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* to the first driver that says 'yes'
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*/
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static void probe_valid_drivers(struct usb_device *dev)
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{
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struct eth_device *eth;
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int j;
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for (j = 0; prob_dev[j].probe && prob_dev[j].get_info; j++) {
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if (!prob_dev[j].probe(dev, 0, &usb_eth[usb_max_eth_dev]))
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continue;
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/*
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* ok, it is a supported eth device. Get info and fill it in
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*/
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eth = &usb_eth[usb_max_eth_dev].eth_dev;
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if (prob_dev[j].get_info(dev,
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&usb_eth[usb_max_eth_dev],
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eth)) {
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/* found proper driver */
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/* register with networking stack */
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usb_max_eth_dev++;
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/*
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* usb_max_eth_dev must be incremented prior to this
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* call since eth_current_changed (internally called)
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* relies on it
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*/
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eth_register(eth);
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if (eth_write_hwaddr(eth, "usbeth",
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usb_max_eth_dev - 1))
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puts("Warning: failed to set MAC address\n");
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break;
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}
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}
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}
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/*******************************************************************************
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* scan the usb and reports device info
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* to the user if mode = 1
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* returns current device or -1 if no
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*/
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int usb_host_eth_scan(int mode)
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{
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int i, old_async;
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if (mode == 1)
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printf(" scanning usb for ethernet devices... ");
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old_async = usb_disable_asynch(1); /* asynch transfer not allowed */
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/* unregister a previously detected device */
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for (i = 0; i < usb_max_eth_dev; i++)
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eth_unregister(&usb_eth[i].eth_dev);
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memset(usb_eth, 0, sizeof(usb_eth));
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for (i = 0; prob_dev[i].probe; i++) {
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if (prob_dev[i].before_probe)
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prob_dev[i].before_probe();
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}
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usb_max_eth_dev = 0;
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#ifdef CONFIG_DM_USB
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/*
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* TODO: We should add U_BOOT_USB_DEVICE() declarations to each USB
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* Ethernet driver and then most of this file can be removed.
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*/
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struct udevice *bus;
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struct uclass *uc;
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int ret;
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ret = uclass_get(UCLASS_USB, &uc);
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if (ret)
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return ret;
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uclass_foreach_dev(bus, uc) {
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for (i = 0; i < USB_MAX_DEVICE; i++) {
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struct usb_device *dev;
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dev = usb_get_dev_index(bus, i); /* get device */
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debug("i=%d, %s\n", i, dev ? dev->dev->name : "(done)");
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if (!dev)
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break; /* no more devices available */
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/*
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* find valid usb_ether driver for this device,
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* if any
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*/
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probe_valid_drivers(dev);
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/* check limit */
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if (usb_max_eth_dev == USB_MAX_ETH_DEV)
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break;
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} /* for */
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}
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#else
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for (i = 0; i < USB_MAX_DEVICE; i++) {
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struct usb_device *dev;
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dev = usb_get_dev_index(i); /* get device */
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debug("i=%d\n", i);
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if (!dev)
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break; /* no more devices available */
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/* find valid usb_ether driver for this device, if any */
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probe_valid_drivers(dev);
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/* check limit */
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if (usb_max_eth_dev == USB_MAX_ETH_DEV)
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break;
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} /* for */
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#endif
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if (usb_max_eth_dev == USB_MAX_ETH_DEV) {
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printf("max USB Ethernet Device reached: %d stopping\n",
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usb_max_eth_dev);
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}
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usb_disable_asynch(old_async); /* restore asynch value */
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printf("%d Ethernet Device(s) found\n", usb_max_eth_dev);
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if (usb_max_eth_dev > 0)
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return 0;
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return -1;
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}
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#endif
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